Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-f6mh-79vh-2hv7
Advisory ID github_osv/GHSA-f6mh-79vh-2hv7
Aliases CVE-2024-28593
Summary Cross-site Scripting in Moodle Chat The Chat activity in Moodle 4.3.3 allows students to insert a potentially unwanted HTML A element or IMG element, or HTML content that leads to a performance degradation. NOTE: the vendor's Using_Chat page says "If you know some HTML code, you can use it in your text to do things like insert images, play sounds or create different coloured and sized text." This page also says "Chat is due to be removed from standard Moodle."
Status Published
Exploitability 0.5
Weighted Severity 4.9
Risk 2.5
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
System Score Found at
cvssv3.1 5.4 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-f6mh-79vh-2hv7/GHSA-f6mh-79vh-2hv7.json
cvssv4 5.3 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-f6mh-79vh-2hv7/GHSA-f6mh-79vh-2hv7.json
generic_textual MODERATE
Reference id Reference type URL
https://docs.moodle.org/403/en/Using_Chat
https://github.com/moodle/moodle
https://medium.com/%40lamscun/how-do-i-change-htmli-from-low-to-critical-your-email-box-is-safe-e7171efd88fe
CVE-2024-28593 https://nvd.nist.gov/vuln/detail/CVE-2024-28593
CVE-2024-28593.TXT https://gist.githubusercontent.com/minendie/4f23174687bc4d8eb7f727d9959b5399/raw/9ce573cebcce5521d9d6f826ab68f3780036b874/CVE-2024-28593.txt
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-f6mh-79vh-2hv7/GHSA-f6mh-79vh-2hv7.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/03/GHSA-f6mh-79vh-2hv7/GHSA-f6mh-79vh-2hv7.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-03-25T16:47:10Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2024/28xxx/CVE-2024-28593.json

Source Advisory: vulnrichment/CVE-2024-28593

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]